What I do is to open the config file of a known car that carries commodities. Copy all the lines that have any one of the commodities (Queue) and paste it onto the car I want to modify. So, all of the above responses are valid and true. Take care on differentiating the type of commodity you use: liquid, box type or bulk. Once you have copied the lines, just change the old kuid number for the one you want for that particular modified car. Down on the bottom of the config file you'll see a list of all the kuid used by the car, and there you also have to add this new kuid number. Let's say you want to add flour pallet, all you have to do is hunt in CM for the kuid of this commodity, and copy that number onto the proper line in the config file of the modified car. You did something wrong and now it is faulty or with errors? just do a "reverse to original" and start all over again. For passengers is pretty much the same. Even if you don't see the commodity, you should be able to see the icon on top of the car with the number of pieces that carries. Note: Once you insert the new kuid, it may show faulty. I found that if you eliminate the first 2 at the number, and the :2 at the end of it, it passes and shows OK. Not sure why, but it does.
